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Physics - Rotation Question with Solution | TestHub

PhysicsRotationCalculation of M.I.Medium2 minPYQ_2020

PhysicsMediumsingle choice

Three points masses, each of mass 'm' are placed at the corners of an equilateral triangle of side $ℓ^{'}$ . The moment of inertia of the system about an axis passing through one of the vertices and parallel to the side joining other two vertices, will be

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Answer:

Solution:

(D) $I I = 2 mh^{2} h = ℓ sin 6 0^{\circ} = ℓ \times \frac{3}{2} = 2 m \times \frac{3}{4} \cdot ℓ^{2} = \frac{3}{2} m ℓ^{2}$

Stream:MHT_CETSubject:PhysicsTopic:RotationSubtopic:Calculation of M.I.

⏱ 2mℹ️ Source: PYQ_2020

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